It employs TIQ technique which uses 2^n-1 comparators and high-speed MUX based encoder circuitry for higher efficiency. Number of comparator count is reduced in reconfigurable ADC. For the high analog input 4-bit ADC is switched on and similarly for the low analog voltage 2-bit ADC is on, thus making the ADC reconfigurable.

This paper presents the design of a reconfigurable Flash ADC in which 15 TIQ comparators are used both for the working of 2-bit as well as 4-bit Flash ADC.

Flash ADCs provide very high conversion rates and is commonly used for low power and high-speed applications. ADC's are widely used in modern communication and digital signal processing. The ADC consumes 6.2031 mW from a 1.8 V supply with dynamic range of 600 mV.read more read lessĪbstract: In the recent VLSI technology design, as the semiconductor technology is approaching towards 100nm feature size and will soon be below 100nm, there exist new challenges in the design of analog-digital mixed signal circuit design with low power, low delay and high speed as main constraints. Differential (DNL) errors measured are between -0.174 LSB to +0.256LSB. The ADC is designed with a 4 bit resolution and is simulated in 0.12 μm standard CMOS that offers a high data conversion rate of 4 Giga Samples/sec. The high speed and low power TIQ flash ADC architecture is designed and simulated using level 3 spice models. The proposed ADC architecture utilizes the Threshold Inverter Quantization (TIQ) technique that uses two cascaded Complementary Metal oxide semiconductor (CMOS) inverters as a comparator. The 4-bit Flash type ADC has been designed with a step size of 0.038125 V.

In this paper a 4-bit, 1.8 V, high speed, low power, and low voltage CMOS flash ADC for SoC applications has been proposed. Speed is an important parameter that is enhanced by using 2×1 multiplexer encoding network. This paper describes the ultra high speed ADC design using a 2×1 multiplexer based encoder that is highly suitable and accurate. In the digital signal processing (DSP) low power and low voltage are of prime concern and it is challenging to design high speed mixed signal circuits. Abstract: Analog-to-Digital converters (ADC) are useful components in signal processing and communication systems.

Encoding in flash